Drop-bar lock.



P. J. PAULY, JR. DROP BAR LOCK.

APPLIGATION FILED FEB. 10, 1908.

Patented Nov. 17, 1908 WI TNESSES: @m

ATTORNEY UNITED S DROP-B AR LOCK.

Specification of Letters Patent.

Patented Nov. 1'7, 1908.

Application filed February 10, 1908. Serial No. 415,196.

To all whom it may concern:

lie it known that l, ln'rnn J. la'um', J11, a. citizen ol' the UnitedStates. residing at St. Louis, State of l\lissouri have invented certainnew and useful improvements in Drop-liar Locks, o'l which the followingis a full, clear, and exact description, reference being had to theaccompanying drawings, forming a part hereof.

My invention has relation to improvements in dropbar locks for jaildoors (though it may with equal propriety be applied to any door), andit consi in the novel details of construction more fully set forth inthe specification and pointed out in the claims.

In the drawings, Figure 1 is a front clevation of a cell and jail-doorshowing my invention applied. thereto; Fig. 2 is a horizontal section onthe broken line of Fig. 1; Fig. 3 is an enlarged elevation (parts insection) showing the log of the drop-bar against the body of the door,and showing in dotted position the same lug opposite the notch of thenotched bar on the free edge of the door, so as to permit the latter toswing open; and Fig. it is an enlarged elevation a1 detail of thebell-crank by which the drop-bar is controlled.

The object of my invention is to provide a drop-bar or gravity-bar witha laterally projecting lug which for one position of the bar (preferablythe lowest position) shall be disposed in the path of some portion ofthe free end of a hinged ail-door so that it may serve as an obstructionto the oscillation of said door and thus insure against the unauthorizedopening thereof; and which for another position of the bar (preferablythe highest position) will come in the path of a notched or recessedsection of such free end, said notch or recess being of suflicientdimensions to allow the lu to pass freely therethrough and thus perm1tthe door to be swung open, the moment the door is released from thepadlock which ordinarily retains the door in its locked position.

A further object of the present invention is to provide simple andeasily operative mechanism for controlling the bar referred to; toprovide for the door a rabbet catch adjacent to the hinge axis of saiddoor; to provide suitable means for limiting the movements of thedrop-bar; to protect the drop-bar against tampering and access fromwithout; and to provide further and other t'caturcs the advantages otwhich will be better apparent ll'Ulll a detailed description ol' theinvention which is as follows:

Referring to the drawings. (7} represents a cell wall along which isdisposed a vertically hinged door l) composed ol' intersecting barsspaced suitable distances apart as understood in the art.

livotcd to a bracket arm 1 at one end of the series o'l cells (only onebeing shown though the invention may control several doorssiinultaueously) is an actuating lever 2 to the end of whose short armis loosely and pivotally coupled the adjacent end of a reciprocatingcontrolling-bar 3 guided and supported in any suitable mechanicalmanner. the bar having disposed thereon a series of sockets 4 torreceiving the end of one arm of a bell-crank lever 5 pivoted about astud 6 above the door I), the end of the second arm of the bell-crankbeing loosely received in a socket 4 of a vertically reciproeatingdrop-bar T disposed along the cell wall adjacent to the door-jamb and inproximity to the free swinging vertical edge of the door when the latteris in its closed position. i

The vertical movement of the drop-ha r is limited by a pin 8 carried bythe cell-wall and operating in a vertically elongated slot 9 in. thebar, the latter being protected by a channel-bar 10 secured to thecell-wall. To the drop-bar are secured a series of angle pieces 11 whosehorizontal legs project laterally bcyond the face of the bar, and infront, or in the path of oscillation of the. door, forming locking lugswhich thus prevent the door from swinging open until shifted oppositethe notches 1* formed in the vertical notched-bar 12 fixed upon the treeedge ot. the door. When the lugs 11 register with the notches, it isapparent of course that the door will be free to swing open, the notchesbeing of slightly larger dimension than the lugs 11. The lugs 11 arefree to play in the Vertical slots formed in the adjacent flange of thechannel. and in the plate or Wall 13 to which it is secured.

The door is provided with the usual latch 14 and hasp 15, thehinge-joint of the door being protected by a rabbet catch-plate 16 aswell understood in the art. While only one door is here shown, it isobvious that the bar 3 may be of any length, and any tllllllllt'l iddrop bars l||;l he rouplod thereto depending on the number of reltdoorsto ho oontrotlod.

ln l igzj. l the aotuatino terer is swung to position to allow thedrop-liar to doseond t its lowest position in whieh event. the lugs Itwill oonio in l'ront ot the horizontal bars ol' the door and thusprrri-ut the door t'roln swinging open; when the lover 2 is howererswung; to the dotted position in Fig. I, the bar I. will he shovedroaru'ardly thus roolv inn the helt rranh in properdirortion to raisethe di'op lmr sutlioiontlr to bring the lugs ll opposite the notrhes rot the several llUtt'llt'th bars 12. and thuspormit the door to ho swungopen.

Hnoh strnrtural features and details as may be shown but to whirh norel'erenre is here made are understood in the art. and henee nodescription of them is required.

Haring deserihed my invention what. I rlailn is:

l. in ronihination with a door hinged to s\\ in;- about a tixeil axis, agraritatingdropbar disposed on the door ianih adjacent to the freeoseillating; end of the door for the elosed position of the door, thebar and free end of the door having eoiiperating lug and note-hformations whereby vi'or one elevation of the bar the door lt'HJh'Pt'lagainst more meat, and for another elevation the said door is free toswing to an open position, suhstantially as set forth.

2. In combination with a door hinged to swing about a fixed axis, amovable bar dis POSCtl on the wall adjarent to the free oseillating endof the door for the closed position of the door, formations on the bardisposed in the path of oscillation of the door tor holding the dooragainst n'iovement for one position of the bar, the free end of the doorhaving notches adapted to come opposite the formations aforesaid foranother poaition ot' the bar whereby the door is left unobstructed andtree to be swung: to open position and suitable mechanism for actuatingthe bar from a point removed from the door sub- .stantialt as $013forth.

3. In combination with a. jail-door hinged about a. fixed vertical axis.a notched bar at the free oscillating edge of the door, a vertieallyreciprocating drop-bar disposed adjaeent said oscillating edge for theclosed position of the door, a series of lugs project.-

inn l'roin tllt' drop bar in l'ront ot' the door tor tho lowiwit.position ot' tlll drop-liar, said lugs hoin adapted to mine. oppositethe non-hes ol tho notohed bar tor a raised posi' tion ot the drop harwhereby the door is live to ho swung to an open position, and suitableinerhanisni t'or urinating the drop bar t'rom a. point. without the oelhFltlJn'ttlllti:i|l as set. l'orth.

=t. ln ('oinbination with a. jail door hinged about a. tixed \ertiealaxis. a uotrhed liar upon the tree osoitiating odgg o ot the. door,ri-rt iraltr reriprorat ingihop har mounted on the ooll wall inproximity to tho 'ortioal t'ree edge ot the door when in its closedposition, a series of hugs projoeting 'FlOlll the dronhar in trout ottho door tor the lowest. position of the drop-bar, said lugs beingadapted to ooine opponite the notches of the not ohc-d bar for a. raisedposition at tho dropbar. an actuating lever on the outside of theeellnrath a. horizontally reeiproeating eontrolling har leading: fromone end of thelor'or above the roll-door, a bell-crank lever pivotall rmounted ahore the. relldoor and having its res 'ieetivo arms; in eoiiierative connection with the drop bar and eontrolliiig-har, where byupon proper osoillation of the actuating lever the drop-har raised orlowered, the parts operating substantially as, and for the purpo e setforth.

5. In combination with a jail-door hinged about a fixed vertical axin; anotehed bar upon the free 'ertieal edge of the door, a vertieallyreeiprooating dropha r mounted on the cell-wall adja tent the door-jainband having vertieallv dispoaed slots. pins operating in said slots forlimiting the movements of the drop-bar, a protecting channel bar forsaid drop-bar, a series of locking lugs carried by the drop-bar andprojecting through elongated slots in the adjacent flange of the ehannelin front of the door, and holding the door againat movement. andanitahle mechanism for shifting the drop-bar to bring the hieking lugsthereof opposite the notehea of the notched bar. whereupon the door isfree to swing; opein auhstantiallv as set forth.

in testimonv whereof I: al'liX my signature, in presei'iee of twowitnesses.

PETER J. PAULY. JR.

\Vit noisses l liuni S'nnmu, Jon. A. Nlltll 10L.

